Well I am a little hesitant too recommend her as her prices are high and the stick I got last time but the service is good. If you want cheaper Brands hatch has been mentioned (particularly if you prefer someone cheaper and dont care about size / age) but she is incall only.
Luciouslips there I said!, downside is as mentioned her prices are high and she is outcall only which if you do have a disability might be good but if you have a family might be bad. Sadly I honestly don't know of any other escorts that I would recommend in Kent. London theres plenty and if your willing to travel there then theres a couple I would recommend.
Heres the links
luciouslips
External Link/Members Only She has a fairly good list of enjoys as well so should be able to cover anything.
BrandsHatch
External Link/Members Only Theres another thread which discusses her some debate as to her size and age being accurate hence my comments above. But Matty does say she gives very good head. Might be a bit too far for you but it is in Kent. She is the only one I havent seen on this post. If you do see her please put a review up so the rest of us know one way or the other.
Someone also recommended a girl in Dartford but if your going that far then you might as well go to London. In which case in no particular order
MadlinMoon
Dee
Cherrytheescort
I have seen them and they are all top class and are in central London (ish) all are great at GFE, top 2 have been reviewed alot and been recommended many times.
There was a thread saying Tonbridge isnt good for escorts but someone may be able to come up with a good one. Lastly you may want to try doing a reverse booking if its an outcall as that may flush out some girls from a wider area depending on how much your offering / time your looking for. I have had a couple of good RB (yet to have a really bad one).
Hope that helps.